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- W4319265280 abstract "Abstract Bees are important pollinators of agricultural crops, but their populations are at risk when pesticides are used. One of the largest risks bees face is poisoning of floral nectar and pollen by insecticides. Studies of bee detection of neonicotinoids have reported contradictory evidence about whether bees can taste these pesticides in sucrose solutions and hence avoid them. Here, we use an assay for the detection of food aversion combined with single-sensillum electrophysiology to test whether the mouthparts of the buff-tailed bumblebee ( Bombus terrestris ) detect the presence of pesticides in a solution that mimicked the nectar of oilseed rape ( Brassica napus ). Bees did not avoid consuming solutions containing concentrations of imidacloprid, thiamethoxam, clothianidin, or sulfoxaflor spanning six orders of magnitude, even when these solutions contained lethal doses. Only extremely high concentrations of the pesticides altered spiking in gustatory neurons through a slight reduction in firing rate or change in the rate of adaptation. These data provide strong evidence that bumblebees cannot detect or avoid field-relevant concentrations of pesticides using information from their mouthparts. As bees rarely contact floral nectar with other body parts, we predict that they are at high risk of unwittingly consuming pesticides in the nectar of pesticide-treated crops." @default.
- W4319265280 created "2023-02-06" @default.
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- W4319265280 date "2023-02-04" @default.
- W4319265280 modified "2023-09-30" @default.
- W4319265280 title "Mouthparts of the bumblebee (<i>Bombus terrestris)</i>exhibit poor acuity for the detection of pesticides in nectar" @default.
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- W4319265280 doi "https://doi.org/10.1101/2023.02.03.526956" @default.
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